原理很简单：一个在之前的强地震中断裂的断层带，一旦再次聚集了足够大的压力后，将可能再次引发同等级别的地震。
The principle is simple: a fault segment that has ruptured in a large quake in the past will-once enough strain has again accumulated-likely fail again in a similar-size earthquake.
另外，在强震震中沿活动构造带或沿块体边缘迁移时，迁移时间也有相隔5个月的现象。
In addition, when the epicenters of strong earthquakes migrated along the active tectonic zone or the edge of a block, a 5-month separation for the the migration was also observed.
熊猫苑圈舍后山崩塌危岩带是“5·12”地震中发生的一处地质灾害。
The rockfall in panda sheds mountain was a geological disaster during "5. 12" earthquake.
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